ECS: come configurare trap SNMP in ECS (in inglese)

1. Impostazione di SNMP sull'indirizzo <> del ricevitore di trap nella GUI

2. Verificare che la configurazione sia impostata su ECS dopo aver aggiunto una configurazione trap nell'interfaccia utente di

# sudo /opt/emc/caspian/fabric/cli/bin/fcli-internal lifecycle alert.snmpconfiguration

Node 1:~ # sudo /opt/emc/caspian/fabric/cli/bin/fcli-internal lifecycle alert.snmpconfiguration
{
  "status": "OK",
  "etag": 73523,
  "snmp_configuration": {
    "engine_id": "80001370010A20A9799527B54B",
    "snmp_targets": [{
      "version": "v2",
      "port": 162,
      "hostname": "127.0.0.1",
      "community": "local",
      "username": "",
      "target_id": "816bd926-147e-4309-bf69-492eea94fc7a",
      "authentication_protocol": "",
      "privacy_protocol": ""
    }]
  }
}

3. Eseguire il comando test alert per generare un avviso e una trap SNMP. 

# TOKEN=$(curl -iks https://localhost:4443/login -u '<User:Password>' | grep X-SDS-AUTH-TOKEN);echo $TOKEN;curl -ks -H "$TOKEN" -H "Content-Type: application/json" -d '{"user_str": "ECS Test Alert", "contact": "ecsadmin@company.com"}' https://localhost:4443/vdc/callhome/alert | xmllint --format -;curl -vk -H "$TOKEN" "https://localhost:4443/logout"

admin@provo:~> TOKEN=$(curl -iks https://localhost:4443/login -u 'root:ChangeMe' | grep X-SDS-AUTH-TOKEN);echo $TOKEN;curl -ks -H "$TOKEN" -H "Content-Type: application/json" -d '{"user_str": "ECS Test Alert", "contact": "ecsadmin@company.com"}' https://localhost:4443/vdc/callhome/alert | xmllint --format -;curl -vk -H "$TOKEN" "https://localhost:4443/logout"
X-SDS-AUTH-TOKEN: BAAcSWx4M3IvY0p6VFBCTUtTaE9zdmFVSVFZNFdNPQMAjAQASHVybjpzdG9yYWdlb3M6VmlydHVhbERhdGFDZW50ZXJEYXRhOmZkYzJhMDg2LTQzMGEtNGU3ZC04ZmNiLTU2MDA3ZDFmOWU4NgIADTE1NTM1NDgzNjk5ODEDAC51cm46VG9rZW46YzQ3ZmUwYzYtZjg3Ni00OTE5LWJkMWYtZDgyMjYwN2I2MmIwAgAC0A8=
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<alert>
  <acknowledged>false</acknowledged>
  <type>Notify</type>
  <description>ECS Test Alert: ecsadmin@company.com</description>
  <id>urn:storageos:Alert:bbb02b69-0169-1355-a40a-c1f3512e51cd</id>
  <namespace/>
  <severity>INFO</severity>
  <symptomCode>999</symptomCode>
  <timestamp>2019-03-26T20:27:58</timestamp>
</alert>
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* Server certificate:
*        subject: CN=localhost
*        start date: 2018-02-28 10:53:28 GMT
*        expire date: 2028-02-26 10:53:28 GMT
*        issuer: CN=localhost
*        SSL certificate verify result: self signed certificate (18), continuing anyway.
* SSLv2, Unknown (23):
> GET /logout HTTP/1.1
> User-Agent: curl/7.37.0
> Host: localhost:4443
> Accept: */*
> X-SDS-AUTH-TOKEN: BAAcSWx4M3IvY0p6VFBCTUtTaE9zdmFVSVFZNFdNPQMAjAQASHVybjpzdG9yYWdlb3M6VmlydHVhbERhdGFDZW50ZXJEYXRhOmZkYzJhMDg2LTQzMGEtNGU3ZC04ZmNiLTU2MDA3ZDFmOWU4NgIADTE1NTM1NDgzNjk5ODEDAC51cm46VG9rZW46YzQ3ZmUwYzYtZjg3Ni00OTE5LWJkMWYtZDgyMjYwN2I2MmIwAgAC0A8=
>
* SSLv2, Unknown (23):
< HTTP/1.1 200 OK
< Date: Tue, 26 Mar 2019 20:27:58 GMT
< Content-Type: application/xml
< Content-Length: 95
< Connection: keep-alive
<
* Connection #0 to host localhost left intact
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><LoggedOut><user>root</user></LoggedOut>

4. Eseguire il seguente comando per verificare se la trap proveniva da un altro nodo del ciclo di vita nel cluster, in quanto la voce di registro avrà la data più recente. 

# domulti 'grep -i snmp /opt/emc/caspian/fabric/agent/services/fabric/lifecycle/log/lifecycle.log'

admin@provo:~> domulti 'grep -i snmp /opt/emc/caspian/fabric/agent/services/fabric/lifecycle/log/lifecycle.log | grep 2017-12-11'                                                  
192.168.219.1
========================================

192.168.219.2
========================================

192.168.219.3
========================================
2017-12-11 18:10:48,849 1419726792 [qtp1183213894-166677] DEBUG com.emc.caspian.fabric.lifecycle.alert.snmp.TrapSenderV2::<init> (line: 51)  - 36827218-dcc3-4d44-b843-1fdcedc3899c Created trap sender SnmpV2CTarget[hostname=127.0.0.1, port=162, version=v2]
2017-12-11 18:10:48,856 1419726799 [qtp1183213894-166677] DEBUG com.emc.caspian.fabric.lifecycle.alert.snmp.TrapSenderV2::sendTrap (line: 85)  - 36827218-dcc3-4d44-b843-1fdcedc3899c Sent trap: pdu TRAP[requestID=143015719, errorStatus=Success(0), errorIndex=0, VBS[1.3.6.1.2.1.1.3.0 = 113 days, 3:54:55.25; 1.3.6.1.6.3.1.1.4.1.0 = 1.3.6.1.4.1.1139.102.1.1; 1.3.6.1.4.1.1139.102.0.1.1 = Mon Dec 11 18:10:48 UTC 2017; 1.3.6.1.4.1.1139.102.0.1.2 = Info; 1.3.6.1.4.1.1139.102.0.1.3 = 999; 1.3.6.1.4.1.1139.102.0.1.4 = ECS Test Alert: ecsadmin@company.com]], target: CommunityTarget[address=127.0.0.1/162,version=1,timeout=5000,retries=2,securityLevel=1,securityModel=1,securityName=local,preferredTransports=null], snmp: org.snmp4j.Snmp@6e6f15f3, transport: org.snmp4j.transport.DefaultUdpTransportMapping@122299ef
2017-12-11 18:10:48,857 1419726800 [qtp1183213894-166677] INFO com.emc.caspian.fabric.lifecycle.alert.snmp.SnmpAgent::sendAlert (line: 400)  - 36827218-dcc3-4d44-b843-1fdcedc3899c Sent alert Event[symptomCode=999, category=CONFIGURATION, severity=INFO, status=UNKNOWN, component=Object, componentId=, subComponent=Notify, subComponentId=, callHome=true, firstTime=1513015848814, lastTime=1513015848814, count=0, eventData=, description=ECS Test Alert: ecsadmin@company.com, channel=ALL] to SNMP target: SnmpV2CTarget[hostname=127.0.0.1, port=162, version=v2]

192.168.219.4
========================================
grep: /opt/emc/caspian/fabric/agent/services/fabric/lifecycle/log/lifecycle.log: No such file or directory

5. In una seconda finestra PuTTY accedere tramite SSH al nodo generato nei log più recenti ed eseguire quanto segue. 

# tcpdump udp -i any port 162

6. Nella finestra principale con eseguire il seguente comando per generare una trap di prova:

# TOKEN=$(curl -iks https://localhost:4443/login -u '<User:Password>' | grep X-SDS-AUTH-TOKEN);echo $TOKEN;curl -ks -H "$TOKEN" -H "Content-Type: application/json" -d '{"user_str": "ECS Test Alert", "contact": "ecsadmin@company.com"}' https://localhost:4443/vdc/callhome/alert | xmllint --format -;curl -vk -H "$TOKEN" "https://localhost:4443/logout"

admin@provo:~> TOKEN=$(curl -iks https://localhost:4443/login -u 'root:ChangeMe' | grep X-SDS-AUTH-TOKEN);echo $TOKEN;curl -ks -H "$TOKEN" -H "Content-Type: application/json" -d '{"user_str": "ECS Test Alert", "contact": "ecsadmin@company.com"}' https://localhost:4443/vdc/callhome/alert | xmllint --format -;curl -vk -H "$TOKEN" "https://localhost:4443/logout"
X-SDS-AUTH-TOKEN: BAAcUWtmaTU0OEo0M21EYW1oSHVLa2dacFUyVTFjPQMAjAQASHVybjpzdG9yYWdlb3M6VmlydHVhbERhdGFDZW50ZXJEYXRhOjI1ZTU1NDY3LWNiMTMtNGM5NC05NGZjLWMzNjBjYjRhNjExYgIADTE1MTI4OTA0NjExODQDAC51cm46VG9rZW46MTYzNzA2ZTgtNTI1Zi00NjgwLWJkYmItZjYyYWM0MjQ1YzViAgAC0A8=
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<alert>
  <acknowledged>false</acknowledged>
  <type>Notify</type>
  <description>ECS Test Alert: ecsadmin@company.com</description>
  <id>urn:storageos:Alert:46c9fdf1-0160-13fc-b8df-7c7be33092f3</id>
  <namespace/>
  <severity>INFO</severity>
  <symptomCode>999</symptomCode>
  <timestamp>2017-12-11T18:15:31</timestamp>
</alert>

7. Nella seconda finestra dovrebbe essere visibile l'attivazione della trap fuori dal nodo del ciclo di vita. Se la trap non viene visualizzata, ricontrollare i registri nel passaggio 4 poiché la risposta del nodo zookeeper potrebbe essere cambiata.

admin@murray:~> tcpdump udp -i any port 162
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes
18:15:37.050102 IP localhost.33530 > localhost.snmptrap:  C="local" V2Trap(198)  system.sysUpTime.0=977758344 S:1.1.4.1.0=E:1139.102.1.1 E:1139.102.0.1.1="Mon Dec 11 18:15:37 UTC 2017" E:1139.102.0.1.2="Info" E:1139.102.0.1.3="999" E:1139.102.0.1.4="ECS Test Alert: ecsadmin@company.com"